package demo14_2;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

public class CardList {
    private static final String[] SUITS = {"方片","红桃","黑桃","梅花"};
    public static List<Card> buyCards() {
        //忽略大小王 13*4 = 52张牌
        List<Card> list = new ArrayList<>();
        for (int i = 0; i < SUITS.length; i++) {

            for (int j = 1; j <= 13; j++) {
                String suit = SUITS[i];
                int rank = j;
                Card card = new Card(suit,rank);
                list.add(card);
            }

        }
        return list;
    }
    //洗牌
    public static void shuffle(List<Card> list) {
        Random random = new Random();
        for (int i = list.size() - 1; i > 0; i--) {
            int index = random.nextInt(i);
            swap(list,i,index);
        }
    }
    public static void swap(List<Card> list,int i,int j) {
        Card temp = list.get(i);
        list.set(i,list.get(j));
        list.set(j,temp);
    }

    public static void main(String[] args) {
        List<Card> list = buyCards();
        System.out.println(list);
        shuffle(list);
        System.out.println(list);


        List<List<Card>> hand = new ArrayList<>();

        List<Card> hand1 = new ArrayList<>();
        List<Card> hand2 = new ArrayList<>();
        List<Card> hand3 = new ArrayList<>();
        hand.add(hand1);
        hand.add(hand2);
        hand.add(hand3);
        //i控制次数
        for (int i = 0; i < 5; i++) {
            //3个人
            for (int j = 0; j < 3; j++) {
                Card card = list.remove(0);
                hand.get(j).add(card);
            }
        }
        System.out.println("第一个人的牌"+hand.get(0));
        System.out.println("第二个人的牌"+hand.get(1));
        System.out.println("第三个人的牌"+hand.get(2));
        System.out.println("剩下的牌"+list);
    }
}
